Perhaps you should try some spelling variations:
oral communication » personal communication
au developpement » du developpement, de developpement, le developpement
developpement en » developpement et, developpement des, developpement de
typologien der » typologie der, typologie des, apologien der
der variation » de variation, does variation, die variation
variation 4 » variations 4, variation _, variation 6
does oral » does formal, does oil
4 does » 2 does
a au » a auf, a bau, a aus

You may be able to get more results by adjusting your search query.

• Adding a wildcard symbol may retrieve word variants: typologien der variation 4 does oral communication a au developpement en afrique.*.